<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8" />
        <title></title>
    </head>
    <style type="text/css">
        body{
            height: 100%;
            width: 100%;
            background-color: #3f3f3f;
        }
    </style>
    <body>
        <audio id="audio"> Your browser does not support the audio element. </audio> <canvas id="canvas" width="800" height="600" > Your browser does not support Canvas tag. </canvas> 
        <button onclick="_audio()">mp3</button>
        <!-- <button onclick="_play()">_play</button> -->
        <input id="fileChooser" type="file" />
        <hr>
        <button onclick="stream_()">授权录音</button>
        <hr>
        <button onclick="stream_range()">授权调节录音</button>
         <input type="range" id="range" min="1" max="40">
    </body>
	<script src="./js/js.js" type="text/javascript" charset="utf-8"></script>
</html>
